package com.atguigu.gulimall.coupon.service.impl;

import com.atguigu.gulimall.coupon.entity.SeckillSkuRelationEntity;
import com.atguigu.gulimall.coupon.service.SeckillSkuRelationService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.coupon.dao.SeckillSessionDao;
import com.atguigu.gulimall.coupon.entity.SeckillSessionEntity;
import com.atguigu.gulimall.coupon.service.SeckillSessionService;


@Service("seckillSessionService")
public class SeckillSessionServiceImpl extends ServiceImpl<SeckillSessionDao, SeckillSessionEntity> implements SeckillSessionService {

	@Autowired
	SeckillSkuRelationService seckillSkuRelationService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SeckillSessionEntity> page = this.page(
                new Query<SeckillSessionEntity>().getPage(params),
                new QueryWrapper<SeckillSessionEntity>()
        );

        return new PageUtils(page);
    }

	@Override
	public List<SeckillSessionEntity> getLates3DaySession() {
		//计算最近三天
		List<SeckillSessionEntity> list = this.list(
				new QueryWrapper<SeckillSessionEntity>()
						.between("tart_time", startTime(), endTime()));

		if (list!=null && list.size()>0){
			List<SeckillSessionEntity> collect = list.stream().map(session -> {
				Long id = session.getId();
				List<SeckillSkuRelationEntity> relationEntities = seckillSkuRelationService.list(new QueryWrapper<SeckillSkuRelationEntity>().eq("promotion", id));
				session.setRelationSkus(relationEntities);
				return session;
			}).collect(Collectors.toList());
			return collect;
		}
		return null;
	}

	private String startTime(){
		LocalDate now = LocalDate.now();
		LocalTime min = LocalTime.MIN;
		LocalDateTime start = LocalDateTime.of(now, min);

		String format = start.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
		return format;
	}

	private String endTime(){
		LocalDate now = LocalDate.now();
		LocalDate localDate = now.plusDays(2);
		LocalTime max = LocalTime.MAX;
		LocalDateTime start = LocalDateTime.of(now, max);

		String format = start.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
		return format;
	}

}